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FIX Connectivity Engineer - Trading
New York, NYApril 1st, 2026
FIX Connectivity Engineer - TradingWe are seeking a candidate with strong experience in financial markets technology to join our Market Connectivity team. This global team is responsible for developing and maintaining front-office trading solutions,collaborating with brokers, exchanges, ECNs, and third-party platforms across all asset classes and regions.Principal ResponsibilitiesIn this role, the candidates primary focus will be on onboarding external trading teams, ensuring seamless integration of third-party trading systems with the Millennium eco-system.Qualifications/Skills Required* Bachelor's degree in Computer Science or a related field.* 5+ years Java programming with multi-threading development experience.* C++ development is a plus.* A solid understanding of object-oriented programming is required.* 3+ years of financial institution experience required.* Strong FIX protocol knowledge is required, FIX 4.2 - FIX 5.0.* Knowledge of binary trading protocols is a plus.* Must have excellent written and verbal communications skills.* Extensive Linux development experience required.* Must have a strong understanding of market structure for equities, futures, options and FX products.* Must have a working knowledge of networking protocols - TCP/IP & multicast.* Must be able to troubleshoot production issues (Level "3" support).The estimated base salary range for this position is $160,000 to $250,000, which is specific to New York and may change in the future. Millennium pays a total compensation package which includes a base salary, discretionary performance bonus, and a comprehensive benefits package. When finalizing an offer, we take into consideration an individual's experience level and the qualifications they bring to the role to formulate a competitive total compensation package.
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